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Finding the Fourth Proportional to 831,295.41, 1,147,200.41 and 487,048.98

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Solution

The fourth proportional to 831,295.41, 1,147,200.41 and 487,048.98 is: 672,135.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,295.41 : 1,147,200.41 = 487,048.98 : x
  2. Step 2: Convert to fraction form
    831,295.41/1,147,200.41 = 487,048.98/x
  3. Step 3: Cross multiply
    831,295.41x = 1,147,200.41 × 487,048.98
  4. Step 4: Simplify right side
    831,295.41x = 558,742,787,895.70
  5. Step 5: Solve for x
    x = 558,742,787,895.70/831,295.41
  6. Step 6: Final answer
    x = 672,135.06

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.